What is the DH55 Dehumidistat?

The DH55 is a Dehumidistat control. This is designed to be wired into an existing, or new exhaust fan and cannot operate on its own. Inside of the product is a humidity sensor. This is wired to a exhaust fan so when you set the DH55 to a level, it triggers the exhaust fan it is wired to turn on and begin to exhaust the air to reduce the humidity.